Water skateboard



FIG. 1 is a top view of a water skateboard showing my new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a side view thereof the side opposite being a mirror image;

FIG. 4 is a right end view thereof; and,

FIG. 5 is a left end view thereof.

The ornamental design for a water skateboard, as shown and described.